Question
Question: Two perfectly elastic particles P and Q of equal mass travelling along the line joining them with ve...
Two perfectly elastic particles P and Q of equal mass travelling along the line joining them with velocities 15 m/sec and 10 m/sec. After collision, their velocities respectively (in m/sec) will be
A
0, 25
B
5, 20
C
10, 15
D
20, 5
Answer
10, 15
Explanation
Solution
For a collision between two identical perfectly elastic particles of equal mass, velocities after collision get interchanged.